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7b9d7320 DJ |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "libsigrok.h" | |
21 | #include "libsigrok-internal.h" | |
22 | ||
23 | #include <glib.h> | |
24 | #include <string.h> | |
25 | ||
3544f848 | 26 | #define LOG_PREFIX "scpi" |
7b9d7320 DJ |
27 | |
28 | #define SCPI_READ_RETRIES 100 | |
29 | #define SCPI_READ_RETRY_TIMEOUT 10000 | |
30 | ||
aa1e3b40 DJ |
31 | /** |
32 | * Parse a string representation of a boolean-like value into a gboolean. | |
33 | * Similar to sr_parse_boolstring but rejects strings which do not represent | |
34 | * a boolean-like value. | |
35 | * | |
36 | * @param str String to convert. | |
37 | * @param ret Pointer to a gboolean where the result of the conversion will be | |
38 | * stored. | |
39 | * | |
40 | * @return SR_OK on success, SR_ERR on failure. | |
41 | */ | |
d5976d8b | 42 | static int parse_strict_bool(const char *str, gboolean *ret) |
aa1e3b40 DJ |
43 | { |
44 | if (!str) | |
45 | return SR_ERR_ARG; | |
46 | ||
47 | if (!g_strcmp0(str, "1") || | |
48 | !g_ascii_strncasecmp(str, "y", 1) || | |
49 | !g_ascii_strncasecmp(str, "t", 1) || | |
50 | !g_ascii_strncasecmp(str, "yes", 3) || | |
51 | !g_ascii_strncasecmp(str, "true", 4) || | |
52 | !g_ascii_strncasecmp(str, "on", 2)) { | |
aa1e3b40 DJ |
53 | *ret = TRUE; |
54 | return SR_OK; | |
aa1e3b40 DJ |
55 | } else if (!g_strcmp0(str, "0") || |
56 | !g_ascii_strncasecmp(str, "n", 1) || | |
57 | !g_ascii_strncasecmp(str, "f", 1) || | |
58 | !g_ascii_strncasecmp(str, "no", 2) || | |
59 | !g_ascii_strncasecmp(str, "false", 5) || | |
60 | !g_ascii_strncasecmp(str, "off", 3)) { | |
aa1e3b40 DJ |
61 | *ret = FALSE; |
62 | return SR_OK; | |
63 | } | |
64 | ||
65 | return SR_ERR; | |
66 | } | |
67 | ||
c3515cea AJ |
68 | SR_PRIV struct sr_scpi_dev_inst *scpi_dev_inst_new(const char *resource, |
69 | const char *serialcomm) | |
70 | { | |
71 | struct sr_scpi_dev_inst *scpi = NULL; | |
72 | const char *usbtmc_prefix = "/dev/usbtmc"; | |
73 | const char *tcp_prefix = "tcp/"; | |
74 | const char *vxi_prefix = "vxi/"; | |
75 | gchar **tokens, *address, *port, *instrument; | |
76 | ||
77 | if (strncmp(resource, usbtmc_prefix, strlen(usbtmc_prefix)) == 0) { | |
78 | sr_dbg("Opening USBTMC device %s.", resource); | |
79 | scpi = scpi_usbtmc_dev_inst_new(resource); | |
80 | } else if (strncmp(resource, tcp_prefix, strlen(tcp_prefix)) == 0) { | |
81 | sr_dbg("Opening TCP connection %s.", resource); | |
82 | tokens = g_strsplit(resource + strlen(tcp_prefix), "/", 0); | |
83 | address = tokens[0]; | |
84 | port = tokens[1]; | |
85 | if (address && port && !tokens[2]) | |
86 | scpi = scpi_tcp_dev_inst_new(address, port); | |
87 | else | |
88 | sr_err("Invalid parameters."); | |
89 | g_strfreev(tokens); | |
90 | } else if (HAVE_RPC && !strncmp(resource, vxi_prefix, strlen(vxi_prefix))) { | |
91 | sr_dbg("Opening VXI connection %s.", resource); | |
92 | tokens = g_strsplit(resource + strlen(tcp_prefix), "/", 0); | |
93 | address = tokens[0]; | |
94 | instrument = tokens[1]; | |
95 | if (address && (!instrument || !tokens[2])) | |
96 | scpi = scpi_vxi_dev_inst_new(address, instrument); | |
97 | else | |
98 | sr_err("Invalid parameters."); | |
99 | g_strfreev(tokens); | |
100 | } else { | |
101 | sr_dbg("Opening serial device %s.", resource); | |
102 | scpi = scpi_serial_dev_inst_new(resource, serialcomm); | |
103 | } | |
104 | return scpi; | |
105 | } | |
106 | ||
23f43dff ML |
107 | /** |
108 | * Open SCPI device. | |
109 | * | |
110 | * @param scpi Previously initialized SCPI device structure. | |
111 | * | |
112 | * @return SR_OK on success, SR_ERR on failure. | |
113 | */ | |
114 | SR_PRIV int sr_scpi_open(struct sr_scpi_dev_inst *scpi) | |
115 | { | |
116 | return scpi->open(scpi->priv); | |
117 | } | |
118 | ||
119 | /** | |
120 | * Add an event source for an SCPI device. | |
121 | * | |
122 | * @param scpi Previously initialized SCPI device structure. | |
123 | * @param events Events to check for. | |
124 | * @param timeout Max time to wait before the callback is called, ignored if 0. | |
125 | * @param cb Callback function to add. Must not be NULL. | |
126 | * @param cb_data Data for the callback function. Can be NULL. | |
127 | * | |
128 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
129 | * SR_ERR_MALLOC upon memory allocation errors. | |
130 | */ | |
131 | SR_PRIV int sr_scpi_source_add(struct sr_scpi_dev_inst *scpi, int events, | |
132 | int timeout, sr_receive_data_callback_t cb, void *cb_data) | |
133 | { | |
134 | return scpi->source_add(scpi->priv, events, timeout, cb, cb_data); | |
135 | } | |
136 | ||
137 | /** | |
138 | * Remove event source for an SCPI device. | |
139 | * | |
140 | * @param scpi Previously initialized SCPI device structure. | |
141 | * | |
142 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or | |
143 | * SR_ERR_MALLOC upon memory allocation errors, SR_ERR_BUG upon | |
144 | * internal errors. | |
145 | */ | |
146 | SR_PRIV int sr_scpi_source_remove(struct sr_scpi_dev_inst *scpi) | |
147 | { | |
148 | return scpi->source_remove(scpi->priv); | |
149 | } | |
150 | ||
7b9d7320 DJ |
151 | /** |
152 | * Send a SCPI command. | |
153 | * | |
23f43dff | 154 | * @param scpi Previously initialized SCPI device structure. |
504f40a5 | 155 | * @param format Format string, to be followed by any necessary arguments. |
7b9d7320 DJ |
156 | * |
157 | * @return SR_OK on success, SR_ERR on failure. | |
158 | */ | |
23f43dff | 159 | SR_PRIV int sr_scpi_send(struct sr_scpi_dev_inst *scpi, |
504f40a5 | 160 | const char *format, ...) |
7b9d7320 | 161 | { |
87c41083 ML |
162 | va_list args; |
163 | int ret; | |
164 | ||
165 | va_start(args, format); | |
166 | ret = sr_scpi_send_variadic(scpi, format, args); | |
167 | va_end(args); | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
172 | /** | |
173 | * Send a SCPI command with a variadic argument list. | |
174 | * | |
175 | * @param scpi Previously initialized SCPI device structure. | |
176 | * @param format Format string. | |
177 | * @param args Argument list. | |
178 | * | |
179 | * @return SR_OK on success, SR_ERR on failure. | |
180 | */ | |
181 | SR_PRIV int sr_scpi_send_variadic(struct sr_scpi_dev_inst *scpi, | |
182 | const char *format, va_list args) | |
183 | { | |
184 | va_list args_copy; | |
504f40a5 ML |
185 | char *buf; |
186 | int len, ret; | |
187 | ||
504f40a5 | 188 | /* Get length of buffer required. */ |
87c41083 ML |
189 | va_copy(args_copy, args); |
190 | len = vsnprintf(NULL, 0, format, args_copy); | |
191 | va_end(args_copy); | |
504f40a5 ML |
192 | |
193 | /* Allocate buffer and write out command. */ | |
194 | buf = g_malloc(len + 1); | |
87c41083 | 195 | vsprintf(buf, format, args); |
504f40a5 ML |
196 | |
197 | /* Send command. */ | |
198 | ret = scpi->send(scpi->priv, buf); | |
199 | ||
200 | /* Free command buffer. */ | |
201 | g_free(buf); | |
202 | ||
203 | return ret; | |
23f43dff | 204 | } |
7b9d7320 | 205 | |
23f43dff | 206 | /** |
05c644ea | 207 | * Begin receiving an SCPI reply. |
23f43dff ML |
208 | * |
209 | * @param scpi Previously initialised SCPI device structure. | |
23f43dff | 210 | * |
05c644ea | 211 | * @return SR_OK on success, SR_ERR on failure. |
23f43dff | 212 | */ |
05c644ea | 213 | SR_PRIV int sr_scpi_read_begin(struct sr_scpi_dev_inst *scpi) |
23f43dff | 214 | { |
05c644ea | 215 | return scpi->read_begin(scpi->priv); |
23f43dff | 216 | } |
7b9d7320 | 217 | |
a1ff9c18 ML |
218 | /** |
219 | * Read part of a response from SCPI device. | |
220 | * | |
221 | * @param scpi Previously initialised SCPI device structure. | |
222 | * @param buf Buffer to store result. | |
223 | * @param maxlen Maximum number of bytes to read. | |
224 | * | |
225 | * @return Number of bytes read, or SR_ERR upon failure. | |
226 | */ | |
05c644ea | 227 | SR_PRIV int sr_scpi_read_data(struct sr_scpi_dev_inst *scpi, |
a1ff9c18 ML |
228 | char *buf, int maxlen) |
229 | { | |
05c644ea ML |
230 | return scpi->read_data(scpi->priv, buf, maxlen); |
231 | } | |
232 | ||
233 | /** | |
234 | * Check whether a complete SCPI response has been received. | |
235 | * | |
236 | * @param scpi Previously initialised SCPI device structure. | |
237 | * | |
238 | * @return 1 if complete, 0 otherwise. | |
239 | */ | |
240 | SR_PRIV int sr_scpi_read_complete(struct sr_scpi_dev_inst *scpi) | |
241 | { | |
242 | return scpi->read_complete(scpi->priv); | |
a1ff9c18 ML |
243 | } |
244 | ||
23f43dff ML |
245 | /** |
246 | * Close SCPI device. | |
247 | * | |
248 | * @param scpi Previously initialized SCPI device structure. | |
249 | * | |
250 | * @return SR_OK on success, SR_ERR on failure. | |
251 | */ | |
252 | SR_PRIV int sr_scpi_close(struct sr_scpi_dev_inst *scpi) | |
253 | { | |
254 | return scpi->close(scpi->priv); | |
255 | } | |
7b9d7320 | 256 | |
23f43dff ML |
257 | /** |
258 | * Free SCPI device. | |
259 | * | |
260 | * @param scpi Previously initialized SCPI device structure. | |
261 | * | |
262 | * @return SR_OK on success, SR_ERR on failure. | |
263 | */ | |
264 | SR_PRIV void sr_scpi_free(struct sr_scpi_dev_inst *scpi) | |
265 | { | |
266 | scpi->free(scpi->priv); | |
267 | g_free(scpi); | |
7b9d7320 DJ |
268 | } |
269 | ||
270 | /** | |
271 | * Send a SCPI command, receive the reply and store the reply in scpi_response. | |
272 | * | |
23f43dff | 273 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 | 274 | * @param command The SCPI command to send to the device (can be NULL). |
d5976d8b | 275 | * @param scpi_response Pointer where to store the SCPI response. |
7b9d7320 | 276 | * |
05c644ea | 277 | * @return SR_OK on success, SR_ERR on failure. |
7b9d7320 | 278 | */ |
23f43dff | 279 | SR_PRIV int sr_scpi_get_string(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 280 | const char *command, char **scpi_response) |
7b9d7320 | 281 | { |
05c644ea ML |
282 | char buf[256]; |
283 | int len; | |
284 | GString *response; | |
285 | ||
7b9d7320 | 286 | if (command) |
23f43dff | 287 | if (sr_scpi_send(scpi, command) != SR_OK) |
7b9d7320 DJ |
288 | return SR_ERR; |
289 | ||
05c644ea ML |
290 | if (sr_scpi_read_begin(scpi) != SR_OK) |
291 | return SR_ERR; | |
292 | ||
293 | response = g_string_new(""); | |
294 | ||
295 | *scpi_response = NULL; | |
296 | ||
297 | while (!sr_scpi_read_complete(scpi)) { | |
298 | len = sr_scpi_read_data(scpi, buf, sizeof(buf)); | |
299 | if (len < 0) { | |
300 | g_string_free(response, TRUE); | |
301 | return SR_ERR; | |
302 | } | |
303 | g_string_append_len(response, buf, len); | |
304 | } | |
305 | ||
306 | *scpi_response = response->str; | |
307 | g_string_free(response, FALSE); | |
308 | ||
309 | return SR_OK; | |
d730f70e DJ |
310 | } |
311 | ||
312 | /** | |
313 | * Send a SCPI command, read the reply, parse it as a bool value and store the | |
314 | * result in scpi_response. | |
315 | * | |
23f43dff | 316 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
317 | * @param command The SCPI command to send to the device (can be NULL). |
318 | * @param scpi_response Pointer where to store the parsed result. | |
319 | * | |
320 | * @return SR_OK on success, SR_ERR on failure. | |
321 | */ | |
23f43dff | 322 | SR_PRIV int sr_scpi_get_bool(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
323 | const char *command, gboolean *scpi_response) |
324 | { | |
325 | int ret; | |
326 | char *response; | |
327 | ||
328 | response = NULL; | |
329 | ||
23f43dff | 330 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
331 | if (!response) |
332 | return SR_ERR; | |
333 | ||
d5976d8b | 334 | if (parse_strict_bool(response, scpi_response) == SR_OK) |
d730f70e DJ |
335 | ret = SR_OK; |
336 | else | |
337 | ret = SR_ERR; | |
338 | ||
339 | g_free(response); | |
340 | ||
341 | return ret; | |
342 | } | |
343 | ||
344 | /** | |
345 | * Send a SCPI command, read the reply, parse it as an integer and store the | |
346 | * result in scpi_response. | |
347 | * | |
23f43dff | 348 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
349 | * @param command The SCPI command to send to the device (can be NULL). |
350 | * @param scpi_response Pointer where to store the parsed result. | |
351 | * | |
352 | * @return SR_OK on success, SR_ERR on failure. | |
353 | */ | |
23f43dff | 354 | SR_PRIV int sr_scpi_get_int(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 355 | const char *command, int *scpi_response) |
d730f70e DJ |
356 | { |
357 | int ret; | |
358 | char *response; | |
359 | ||
360 | response = NULL; | |
361 | ||
23f43dff | 362 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
363 | if (!response) |
364 | return SR_ERR; | |
365 | ||
366 | if (sr_atoi(response, scpi_response) == SR_OK) | |
367 | ret = SR_OK; | |
368 | else | |
369 | ret = SR_ERR; | |
370 | ||
371 | g_free(response); | |
372 | ||
373 | return ret; | |
374 | } | |
375 | ||
376 | /** | |
377 | * Send a SCPI command, read the reply, parse it as a float and store the | |
378 | * result in scpi_response. | |
379 | * | |
23f43dff | 380 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
381 | * @param command The SCPI command to send to the device (can be NULL). |
382 | * @param scpi_response Pointer where to store the parsed result. | |
383 | * | |
384 | * @return SR_OK on success, SR_ERR on failure. | |
385 | */ | |
23f43dff | 386 | SR_PRIV int sr_scpi_get_float(struct sr_scpi_dev_inst *scpi, |
d730f70e DJ |
387 | const char *command, float *scpi_response) |
388 | { | |
389 | int ret; | |
390 | char *response; | |
391 | ||
392 | response = NULL; | |
393 | ||
23f43dff | 394 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
395 | if (!response) |
396 | return SR_ERR; | |
397 | ||
398 | if (sr_atof(response, scpi_response) == SR_OK) | |
399 | ret = SR_OK; | |
400 | else | |
401 | ret = SR_ERR; | |
402 | ||
403 | g_free(response); | |
404 | ||
405 | return ret; | |
406 | } | |
407 | ||
408 | /** | |
409 | * Send a SCPI command, read the reply, parse it as a double and store the | |
410 | * result in scpi_response. | |
411 | * | |
23f43dff | 412 | * @param scpi Previously initialised SCPI device structure. |
d730f70e DJ |
413 | * @param command The SCPI command to send to the device (can be NULL). |
414 | * @param scpi_response Pointer where to store the parsed result. | |
415 | * | |
416 | * @return SR_OK on success, SR_ERR on failure. | |
417 | */ | |
23f43dff | 418 | SR_PRIV int sr_scpi_get_double(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 419 | const char *command, double *scpi_response) |
d730f70e DJ |
420 | { |
421 | int ret; | |
422 | char *response; | |
423 | ||
424 | response = NULL; | |
425 | ||
23f43dff | 426 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
d730f70e DJ |
427 | if (!response) |
428 | return SR_ERR; | |
429 | ||
430 | if (sr_atod(response, scpi_response) == SR_OK) | |
431 | ret = SR_OK; | |
432 | else | |
433 | ret = SR_ERR; | |
434 | ||
435 | g_free(response); | |
436 | ||
7b9d7320 DJ |
437 | return ret; |
438 | } | |
439 | ||
f5922ade DJ |
440 | /** |
441 | * Send a SCPI *OPC? command, read the reply and return the result of the | |
442 | * command. | |
443 | * | |
23f43dff | 444 | * @param scpi Previously initialised SCPI device structure. |
f5922ade DJ |
445 | * |
446 | * @return SR_OK on success, SR_ERR on failure. | |
447 | */ | |
23f43dff | 448 | SR_PRIV int sr_scpi_get_opc(struct sr_scpi_dev_inst *scpi) |
f5922ade DJ |
449 | { |
450 | unsigned int i; | |
451 | gboolean opc; | |
452 | ||
453 | for (i = 0; i < SCPI_READ_RETRIES; ++i) { | |
23f43dff | 454 | sr_scpi_get_bool(scpi, SCPI_CMD_OPC, &opc); |
f5922ade DJ |
455 | if (opc) |
456 | return SR_OK; | |
f5922ade DJ |
457 | g_usleep(SCPI_READ_RETRY_TIMEOUT); |
458 | } | |
459 | ||
460 | return SR_ERR; | |
461 | } | |
462 | ||
8acbb89a DJ |
463 | /** |
464 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
465 | * floats and store the as an result in scpi_response. | |
466 | * | |
23f43dff | 467 | * @param scpi Previously initialised SCPI device structure. |
8acbb89a DJ |
468 | * @param command The SCPI command to send to the device (can be NULL). |
469 | * @param scpi_response Pointer where to store the parsed result. | |
470 | * | |
471 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
472 | * error or upon no response. The allocated response must be freed by |
473 | * the caller in the case of an SR_OK as well as in the case of | |
474 | * parsing error. | |
8acbb89a | 475 | */ |
23f43dff | 476 | SR_PRIV int sr_scpi_get_floatv(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 477 | const char *command, GArray **scpi_response) |
8acbb89a DJ |
478 | { |
479 | int ret; | |
480 | float tmp; | |
481 | char *response; | |
d5976d8b | 482 | gchar **ptr, **tokens; |
8acbb89a DJ |
483 | GArray *response_array; |
484 | ||
485 | ret = SR_OK; | |
486 | response = NULL; | |
487 | tokens = NULL; | |
488 | ||
23f43dff | 489 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
8acbb89a DJ |
490 | if (!response) |
491 | return SR_ERR; | |
492 | ||
493 | tokens = g_strsplit(response, ",", 0); | |
494 | ptr = tokens; | |
495 | ||
496 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(float), 256); | |
497 | ||
d5976d8b | 498 | while (*ptr) { |
8acbb89a DJ |
499 | if (sr_atof(*ptr, &tmp) == SR_OK) |
500 | response_array = g_array_append_val(response_array, | |
501 | tmp); | |
502 | else | |
503 | ret = SR_ERR; | |
504 | ||
505 | ptr++; | |
506 | } | |
507 | g_strfreev(tokens); | |
508 | g_free(response); | |
509 | ||
510 | if (ret == SR_ERR && response_array->len == 0) { | |
511 | g_array_free(response_array, TRUE); | |
512 | *scpi_response = NULL; | |
513 | return SR_ERR; | |
514 | } | |
515 | ||
516 | *scpi_response = response_array; | |
517 | ||
1a323dd8 DJ |
518 | return ret; |
519 | } | |
520 | ||
521 | /** | |
522 | * Send a SCPI command, read the reply, parse it as comma separated list of | |
523 | * unsigned 8 bit integers and store the as an result in scpi_response. | |
524 | * | |
23f43dff | 525 | * @param scpi Previously initialised SCPI device structure. |
1a323dd8 DJ |
526 | * @param command The SCPI command to send to the device (can be NULL). |
527 | * @param scpi_response Pointer where to store the parsed result. | |
528 | * | |
529 | * @return SR_OK upon successfully parsing all values, SR_ERR upon a parsing | |
d5976d8b UH |
530 | * error or upon no response. The allocated response must be freed by |
531 | * the caller in the case of an SR_OK as well as in the case of | |
532 | * parsing error. | |
1a323dd8 | 533 | */ |
23f43dff | 534 | SR_PRIV int sr_scpi_get_uint8v(struct sr_scpi_dev_inst *scpi, |
d5976d8b | 535 | const char *command, GArray **scpi_response) |
1a323dd8 | 536 | { |
d5976d8b | 537 | int tmp, ret; |
1a323dd8 | 538 | char *response; |
d5976d8b | 539 | gchar **ptr, **tokens; |
1a323dd8 DJ |
540 | GArray *response_array; |
541 | ||
542 | ret = SR_OK; | |
543 | response = NULL; | |
544 | tokens = NULL; | |
545 | ||
23f43dff | 546 | if (sr_scpi_get_string(scpi, command, &response) != SR_OK) |
1a323dd8 DJ |
547 | if (!response) |
548 | return SR_ERR; | |
549 | ||
550 | tokens = g_strsplit(response, ",", 0); | |
551 | ptr = tokens; | |
552 | ||
553 | response_array = g_array_sized_new(TRUE, FALSE, sizeof(uint8_t), 256); | |
554 | ||
d5976d8b | 555 | while (*ptr) { |
1a323dd8 DJ |
556 | if (sr_atoi(*ptr, &tmp) == SR_OK) |
557 | response_array = g_array_append_val(response_array, | |
558 | tmp); | |
559 | else | |
560 | ret = SR_ERR; | |
561 | ||
562 | ptr++; | |
563 | } | |
564 | g_strfreev(tokens); | |
565 | g_free(response); | |
566 | ||
567 | if (response_array->len == 0) { | |
568 | g_array_free(response_array, TRUE); | |
569 | *scpi_response = NULL; | |
570 | return SR_ERR; | |
571 | } | |
572 | ||
573 | *scpi_response = response_array; | |
574 | ||
8acbb89a DJ |
575 | return ret; |
576 | } | |
577 | ||
7b9d7320 DJ |
578 | /** |
579 | * Send the *IDN? SCPI command, receive the reply, parse it and store the | |
580 | * reply as a sr_scpi_hw_info structure in the supplied scpi_response pointer. | |
581 | * | |
d5976d8b UH |
582 | * The hw_info structure must be freed by the caller via sr_scpi_hw_info_free(). |
583 | * | |
23f43dff | 584 | * @param scpi Previously initialised SCPI device structure. |
7b9d7320 DJ |
585 | * @param scpi_response Pointer where to store the hw_info structure. |
586 | * | |
587 | * @return SR_OK upon success, SR_ERR on failure. | |
7b9d7320 | 588 | */ |
23f43dff | 589 | SR_PRIV int sr_scpi_get_hw_id(struct sr_scpi_dev_inst *scpi, |
7b9d7320 DJ |
590 | struct sr_scpi_hw_info **scpi_response) |
591 | { | |
592 | int num_tokens; | |
593 | char *response; | |
bc7b7eb1 | 594 | char *newline; |
7b9d7320 | 595 | gchar **tokens; |
7b9d7320 DJ |
596 | struct sr_scpi_hw_info *hw_info; |
597 | ||
598 | response = NULL; | |
599 | tokens = NULL; | |
600 | ||
23f43dff | 601 | if (sr_scpi_get_string(scpi, SCPI_CMD_IDN, &response) != SR_OK) |
7b9d7320 DJ |
602 | if (!response) |
603 | return SR_ERR; | |
604 | ||
77c16c04 ML |
605 | sr_info("Got IDN string: '%s'", response); |
606 | ||
bc7b7eb1 ML |
607 | /* Remove trailing newline if present. */ |
608 | if ((newline = g_strrstr(response, "\n"))) | |
609 | newline[0] = '\0'; | |
610 | ||
7b9d7320 DJ |
611 | /* |
612 | * The response to a '*IDN?' is specified by the SCPI spec. It contains | |
613 | * a comma-separated list containing the manufacturer name, instrument | |
614 | * model, serial number of the instrument and the firmware version. | |
615 | */ | |
616 | tokens = g_strsplit(response, ",", 0); | |
617 | ||
618 | for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++); | |
619 | ||
620 | if (num_tokens != 4) { | |
d5976d8b | 621 | sr_dbg("IDN response not according to spec: %80.s.", response); |
7b9d7320 DJ |
622 | g_strfreev(tokens); |
623 | g_free(response); | |
624 | return SR_ERR; | |
625 | } | |
626 | g_free(response); | |
627 | ||
628 | hw_info = g_try_malloc(sizeof(struct sr_scpi_hw_info)); | |
629 | if (!hw_info) { | |
630 | g_strfreev(tokens); | |
631 | return SR_ERR_MALLOC; | |
632 | } | |
633 | ||
634 | hw_info->manufacturer = g_strdup(tokens[0]); | |
635 | hw_info->model = g_strdup(tokens[1]); | |
636 | hw_info->serial_number = g_strdup(tokens[2]); | |
637 | hw_info->firmware_version = g_strdup(tokens[3]); | |
638 | ||
639 | g_strfreev(tokens); | |
640 | ||
641 | *scpi_response = hw_info; | |
642 | ||
643 | return SR_OK; | |
644 | } | |
645 | ||
646 | /** | |
647 | * Free a sr_scpi_hw_info struct. | |
648 | * | |
649 | * @param hw_info Pointer to the struct to free. | |
650 | * | |
651 | * This function is safe to call with a NULL pointer. | |
652 | */ | |
653 | SR_PRIV void sr_scpi_hw_info_free(struct sr_scpi_hw_info *hw_info) | |
654 | { | |
655 | if (hw_info) { | |
656 | g_free(hw_info->manufacturer); | |
657 | g_free(hw_info->model); | |
658 | g_free(hw_info->serial_number); | |
659 | g_free(hw_info->firmware_version); | |
660 | g_free(hw_info); | |
661 | } | |
662 | } |